Pure Swift Json Versions Save

⚠️ pure-swift-json was moved to swift-extras and got a new name: swift-extras-json. The library PureSwiftJSON has been renamed to ExtrasJSON.

Other Changes:

• PSJSONDecoder has been renamed to XJSONDecoder
• PSJSONEncoder has been renamed to XJSONEncoder

• Fix the escaped encoding of control characters (U+0000 through U+001F). #66
• Remove all references to RFC7159, which has been superseded by RFC8259. #66
• Use new Swift versions in CI #65
• Update swiftformat to a newer version #66

⚠️ This release includes breaking api changes

• reduce API surface – make DocumentReader internal (#56)
• add Code of Conduct (#54)
• use swift run -c release in performance tests (#57) thanks @pokryfka
• use newer version of swiftformat (#59)
• fix Documentation (#58) thanks @helje5
• fix semantics of JSONUnkeyedDecodingContainer (#62) thanks @gwynne

• fixes an issue that led to a crash, if an empty array was decoded (#52)
• makes PSJSONEncoder's and PSJSONDecoder's userInfo public (Added to public api) (#50 and #51)

Thanks to @ktoso and @calebkleveter for reporting the issues fixed in this release!

⚠️ This release includes breaking api changes

• JSONEncoder and JSONDecoder are now prefixed with PS to remove naming conflicts with Foundation. (#48)
• PSJSONEncoder is now a struct (#47)
• PSJSONEncoder can now encode into JSONValue and PSJSONDecoder can decode from JSONValue (#46)
• JSONValue.debugDataTypeDescription is now internal (#29 #45)
• everything is now under one target PureSwiftJSON. (#44)
• The code is now formatted with swiftformat. This is enforced with CI (#43)
• The "early stage development" warning has been removed (#49)

This shall be one of the last releases before 1.0.0. With the changes in the project structure and the renaming of the PSJSONEncoder and PSJSONDecoder, I hope that the coming changes will not be source breaking.

• Fixes a bug where only uppercase unicode escape sequences were allowed. Before only \u003C was supported, now we support \u003c as well (#42)

• Fixes a bug in JSONUnkeyedDecodingContainer (#41)

• Decoding an object from an unknown key within an object doesn't crash anymore.

Fixed a couple of issues.

• Fixed a couple of typos in the README.md (thx for reporting @Trzyipolkostkicukru) #23
• Fixed typo decodeFixedWithInteger() -> decodeFixedWidthInteger() (thx @rjchatfield) #22 #18
• Updated the README.md with an example of how to use Date with a propertyWrapper (thx @Trzyipolkostkicukru) #17
• Allow encode<T: Encodable>(_ value: T) in JSONSingleValueEncodingContainer (thx @adam-fowler) #20 #24
• Added a License (Apache 2.0) #27
• JSONEncoder nestedContainer() and nestedUnkeyedContainer() work #19 #25 (thx for reporting @adam-fowler)
• JSONEncoder updates coding path #21 #25 (thx for reporting @adam-fowler)
• If NaN or Infinity is encoded an error is thrown #13 (thx for reporting @dinhhungle)

The very first release! Feedback highly welcome.